[Pacemaker] Making a resource slightly sticky?

[Tim Serong]

On 5/14/2010 at 07:39 AM, Paul Graydon <paul at ehawaii.gov> wrote: 
> Hi, 
>  
> One of my nodes decided to throw a wobbly this morning and locked up  
> it's network card for about a minute.  Pacemaker came to the rescue,  
> merrily transferred everything over to the other node successfully,  
> however when the original node came back again it transferred the  
> functions back across. 
>  
> Is is possible at all to make resources sticky?  i.e. resources start on  
> node 1.  Node 1 fails, resources migrate to node 2.  Node 1 recovers,  
> but resources stay on node 2 until node 2 fails, at which point they'd  
> migrate to node 1. 

Yes, you want the "resource-stickiness" property.  Using "crm configure",
per resource:

  # primitive foo .... \
      meta resource-stickiness="1"

Or, to make everything a bit sticky:

  # rsc_defaults resource-stickiness="1"

Regards,

Tim


-- 
Tim Serong <tserong at novell.com>
Senior Clustering Engineer, OPS Engineering, Novell Inc.